JP2649481B2 - Water repellent treated soil improving material and method for producing and using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil remediation material which has been subjected to a water-repellent treatment to prevent rainwater from penetrating into land and evaporating moisture in the ground, and a method for producing and using the same.

[0002]

2. Description of the Related Art In places where weeds are to be suppressed, for example, in the median strip on roads, in sports fields, on golf courses, etc., weeding is carried out manually or by a mowing machine or by spraying pesticides.

[0003] The mowing work is not only a heavy labor, but also it is difficult to perform it whenever necessary due to lack of manpower. Moreover, it was dangerous at the median strip on the road. In addition, there is a risk that the application of pesticides may adversely affect the environment.

[0004]

The problem to be solved by the present invention is to semi-permanently infiltrate rainwater, evaporate moisture in the ground, and remove harmful waste without adversely affecting the environment. To prevent leaching of water containing harmful substances.

[0005]

The feature of the water-repellent soil improvement material of the present invention is one or more selected from the group consisting of silicon-containing soil, sand, pebbles, and incineration ash of household dust. The raw material particles are coated by baking silicone.

Another characteristic of the production method is that the water content is zero.
Soil containing silicon, dried to about 5%,
One or more materials selected from the group consisting of sand, pebbles, and incineration ash of household dust are mixed with an emulsion of water and silicone oil to wet the emulsion.
By heating and drying at ~ 200 [deg.] C, the raw material particles are baked and coated with silicone.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for producing the water-repellent soil improving material of the present invention is as follows. The raw material is one or more of these, such as soil, sand, pebbles, and incineration ash of household dust. The soil containing sand, that is, earth and sand, mountain sand, sea sand, small-sized pebbles, incineration ash of household dust emitted from an incineration plant, and a mixture of one or more of these are used as raw materials. For example, the incineration ash may be added to earth and sand.

In the embodiment, masa earth is used as a raw material because it is easily available and relatively inexpensive and easy to handle. First, the raw material masa earth is sieved with a sieve machine, and the particle size is adjusted to about 0 to 10 mm. However, the particle size does not need to be particularly limited, and is set to about 10 mm at the maximum for the convenience of the subsequent steps and the handling of the product.

Next, the masa earth having a uniform particle size is mixed with a mixer for about 1 hour.
The mixture is stirred for about 2 to 3 minutes while being heated to 80 ° C. to about 200 ° C., and dried to a moisture content of about 0 to 5% to obtain a dry soil. The heating temperature and the heating time can be appropriately selected depending on the properties and amounts of the raw materials.
It should just be about.

On the other hand, about 3 cc of a commercially available silicone oil is mixed with 1000 cc of water and stirred with a mixer to form an emulsion. The mixing ratio of the silicone oil is appropriately increased or decreased depending on the properties and particle size of the raw material. For example, when the raw material is almost sand, the amount of silicone oil can be reduced.
This commercially available silicone oil is a colorless, odorless, transparent synthetic oil, regardless of the manufacturer.

After mixing 1 liter of the dried soil with 20 liters of the above-mentioned emulsion at room temperature using a mixer for about 10 minutes, the mixture is dried at about 180 to 200 ° C. in a drier to evaporate water. Thereby, the silicone is baked and coated on the surface of the masa earth particles.

The water repellent treated soil improving material thus obtained has excellent water repellency and is heat resistant.
It is not decomposed unless heated above ℃, so it does not lose water repellency semipermanently. Furthermore, it is non-toxic and odorless, so it is not decomposed even when taken up by small animals and plants, so it does not adversely affect ecosystems.

It has excellent air permeability, does not solidify even at a low temperature of -50 ° C., and does not lose water repellency. If the heating is performed at about 260 ° C. or more, hydrogen that has been bonded to silicon and oxygen remains as water and returns to the original soil.

An example of the use of this soil improving material having excellent water repellency will be described below.

Use Example 1 Water-repellent treatment is applied to the ground to a thickness of about 5 to 10 cm for weeding of a central zoning of a road, playing field, etc., drying of unpaved ground, prevention of mud, and prevention of frost pillars. The soil remediation material is spread to form a water-repellent surface layer. Since the water-repellent surface layer has excellent water repellency, rainwater does not permeate the soil under the water-repellent surface layer. In addition, since the area under the water-repellent surface layer is dried, seeds of weeds in the soil do not germinate.
The remaining rainwater that has not penetrated quickly evaporates due to solar heat or wind.

Use Example 2 In cultivation of a plant in a place with severe dryness, a soil remediation material is spread to a thickness of about 5 to 10 cm under the root of the plant to form a water-repellent underground layer. Since the water-repellent underground layer prevents rainwater from falling, the soil on the underwater layer does not dry and plants can be easily grown.

Use Example 3 In a place where a pesticide is sprayed on a green golf course or the like, a soil improving material is spread in a gutter-like or plate-like shape that descends in the soil to form a water-repellent underground layer. The water-repellent underground layer is guided to a drainage means such as a tank without leaching water containing harmful substances such as pesticides into the ground.
Collect the water collected in the drainage means.

Usage Example 4 Waste soil containing harmful substances such as industrial waste is wrapped with a soil improving material to form a water-repellent envelope layer. The water-repellent surrounding layer does not release water containing harmful substances to the outside.

[0019]

The present invention has excellent water repellency semipermanently, is non-toxic and harmless, and has no adverse effects on the environment.
It can be widely used to dry the ground, prevent land from drying, and contain harmful substances.

The manufacturing method is simple, no special equipment is required, and the cost is low because inexpensive raw materials are used.

Claims (6)

(57) [Claims] 1. A water-repellent soil in which raw material particles comprising one or more selected from the group consisting of silicon-containing soil, sand, pebbles, and incineration ash of household dust are coated by baking silicone. Improved material. 2. A raw material comprising one or more materials selected from the group consisting of silicon-containing soil, sand, pebbles and incineration ash of household dust, which has been dried until the water content becomes about 0 to 5%, A method for producing a water-repellent soil-improving material, comprising mixing an emulsion of water and silicone oil to wet the emulsion, and then heating and drying the emulsion at 180 to 200 ° C. to coat the raw material particles with silicone. 3. A method of using a water-repellent soil-improving material, in which a water-repellent soil-improving material is coated on a surface of land by forming a water-repellent surface by coating silicone with raw material particles. 4. A soil remediation material coated with silicone on the raw material particles and subjected to a water repellent treatment is spread under the root of a plant to form a water repellent underground layer under the root. How to use soil improvement material. 5. A soil remediation material that has been subjected to water repellent treatment by coating raw material particles with silicone and sloping down into the ground to a drainage means to form a water repellent underground layer. How to use the material. 6. A method of using a water-repellent soil-improving material that forms a water-repellent surrounding layer by enclosing hazardous waste with a water-repellent soil-improving material coated with silicone on a raw material.